<template>
    <div class="login_container">
        <div class="login_box">
            <!--头像区域-->
            <div class="avatar_box">
                <img src="../assets/logo.png" alt="">
            </div>

            <!--登陆表单区域-->
            <el-form ref="loginFormRef" :model="loginForm" :rules="loginFormRules" label-width="80px" class="login_form">
                <!--用户名-->
                <el-form-item label="用户名" prop="username">
                    <el-input v-model="loginForm.username" placeholder="请输入用户名" prefix-icon="el-icon-user-solid"></el-input>
                </el-form-item>
                <!--密码-->
                <el-form-item label="密码" prop="password">
                    <el-input v-model="loginForm.password" placeholder="请输入密码" prefix-icon="el-icon-lock"
                        show-password></el-input>
                </el-form-item>
                <!--按钮区域-->
                <el-form-item class="btns">
                    <el-button type="primary" @click="login">登录</el-button>
                    <el-button type="info" @click="resetloginForm">重置</el-button>
                </el-form-item>
            </el-form>

        </div>
    </div>
</template>

<script>
export default {
    data() {
        return {
            //这是登录表单的数据绑定对象
            loginForm: {
                username: 'admin',
                password: '123456'
            },
            //这是表单的验证规则对象
            loginFormRules: {
                //验证用户名是否合法
                username: [
                    { required: true, message: '请输入登录名称', trigger: 'blur' },
                    { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
                ],
                //验证密码是否合法
                password: [
                    { required: true, message: '请输入登录密码', trigger: 'blur' },
                    { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
                ]
            }
        };
    },
    methods: {
        //点击重置按钮，重置登录表单
        resetloginForm() {
            this.$refs.loginFormRef.resetFields();
        },
        login() {
            this.$refs.loginFormRef.validate(async valid => {
                if (!valid) return;
                const { data: res } = await this.$http.post('login', this.loginForm);
                if (res.data.status == 200) return this.$message.error("登录失败");
                this.$message.success("登录成功");
                window.sessionStorage.setItem("token", res.data.token);
                this.$router.push("/home");
            });

        }
    }
};
</script>

<style lang="less" scoped>
.login_container {
    background-color: #909399;
    height: 100%;
}

.login_box {
    width: 450px;
    height: 300px;
    background-color: #fff;
    border-radius: 3px;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);

    .avatar_box {
        height: 130px;
        width: 130px;
        border: 1px solid #eee;
        border-radius: 50%;
        padding: 10px;
        box-shadow: 0 0 10px;
        position: absolute;
        left: 50%;
        transform: translate(-50%, -50%);
        background-color: #fff;

        img {
            width: 100%;
            height: 100%;
            border-radius: 50%;
            background-color: #eee;
        }
    }
}

.login_form {
    position: absolute;
    bottom: 0;
    width: 100%;
    padding: 0 20px;
    box-sizing: border-box;
}

.btns {
    display: flex;
    justify-content: flex-end;
}
</style>